Unbreakable has a number of excellent scenes dealing
with how empty one feels without "meaning and purpose". This emptiness (or
"sadness" in the film) could also come from sin and separation from God.
On the DVD, you can trace this theme of sadness Bruce Willis' character
feels (and how, after he does what he's "supposed to be doing", it goes
away) in the following scenes (I've also included the time into the
movie):
ch. 7 (0.31.40-0.32.10)
ch. 17 (1.02.50-1.03.35)
ch. 22 (1.17.33-1.18.30)
ch. 23 (1.22.15-1.33.34)
ch. 27 (1.37.44-1.38.44)(artie kuhn)